196 results about "Fork tuning" patented technology

The invention provides a resonance type flow field sensor with an inertia force compensation structure. The resonance type flow field sensor comprises a substrate; the double-end fixed tuning fork is fixed in the middle of the base; the cilium supporting structure is suspended on the base and is positioned at one end of the double-end fixed tuning fork; the comb tooth capacitors are arranged on the substrate and located on the two sides of the double-end fixed tuning fork; the cilia is arranged on the cilia supporting structure; one end of the micro lever is connected with the cilium supporting structure, and the other end is connected with one end of the double-end fixed tuning fork; and the inertia force compensation structure is suspended on the base, is symmetrically arranged relative to the double-end fixed tuning fork, is connected with one end of the double-end fixed tuning fork, and is positioned between the micro lever and the double-end fixed tuning fork. According to the sensor, the change of an air flow field is captured through the cilia on the sensor, the resonant frequency is detected through the capacitor, the flow velocity of the flow field can be obtained, the inertia force compensation structure can compensate interference of inertia force on an output result, and the sensor can still output stable flow velocity of the flow field when being interfered by the inertia force.

The invention relates to the technical field of density measurement, in particular to a fixed online densimeter which comprises a flange plate, a mounting groove of a circular structure is formed in the top of the flange plate, a rotating ring is rotatably mounted in the mounting groove, and a fixed pile of a cylindrical structure is rotatably mounted at the inner ring of the rotating ring. Two symmetrically arranged tuning fork detection heads are arranged at the bottom of the rotating ring, two symmetrically arranged connecting piles are arranged at the top of the rotating ring, and a display instrument is arranged at the tops of the two connecting piles and located above the fixed pile. The rotating ring is designed, the two tuning fork detection heads can be circularly used in a reciprocating mode through rotation of the rotating ring, and the density detection efficiency is improved.

The invention relates to a device for preparing a tuning fork type scanning probe microscope probe, the device is composed of a base, a tuning fork fixing frame, a needle tip clamping frame, a dispensing support, a microscopic observation instrument and a laser cutter, and the tuning fork fixing frame, the needle tip clamping frame, the dispensing support, the microscopic observation instrument and the laser cutter are all fixedly installed on the base. The laser cutter comprises a laser device base and a laser device, and the laser device is installed on a lifting support of the laser device base, located over the quartz tuning fork fixing frame and used for cutting the bonded needle tip in a non-contact mode. The device provided by the invention solves the problems that the tip is easy to damage during the bonding of the tuning fork probe and the performance of the quartz tuning fork probe is reduced because the tip is too long, thereby improving the reliability of the manufactured tuning fork type scanning probe microscope probe.

The invention belongs to the technical field of precision sensors, and discloses a novel silicon resonance accelerometer structure based on lever difference. The structure comprises an upper layer, a middle layer and a lower layer, the middle layer is a monocrystalline silicon micro-mechanical structure and comprises a mass block, an amplification lever structure, a double-end fixed tuning fork type resonator and the like; through a central anchor point and two amplification lever structures with opposite force transmission directions, the stress difference of the two resonators is realized, the number of supporting anchor points is reduced, the resonators are in a thermal expansion free state under a temperature change working condition, the thermal stress influence is reduced, and the temperature performance is improved; meanwhile, the area of the stress isolation frame is reduced, the difficulty of the processing technology is reduced, and the engineering application of the silicon resonance accelerometer to an ultra-precise system is promoted.

The invention discloses a PT symmetry-based three-degree-of-freedom weak-coupling high-sensitivity MEMS sensor and a preparation method thereof, and the sensor comprises double-end fixed tuning fork resonators which are in mirror symmetry pairwise and are equal in mass and size; the three double-end fixed tuning fork resonators are positioned on the same straight line; the adjustable mechanical weak coupling structure is used for coupling and connecting the adjacent double-end fixed tuning fork resonators; the movable comb tooth capacitor structures are located on the two sides of each double-end fixed tuning fork resonator. The detection comb teeth and the driving comb teeth are located on the outer sides of the movable comb tooth capacitor structures corresponding to the two double-end fixed tuning fork resonators. The two adjustable damping circuits are correspondingly connected with the electrode layer and the two double-end fixed tuning fork resonators through leads; glass serves as a substrate of the sensor. According to the invention, a new principle and a new idea are provided for the design of a micro-electro-mechanical system, and the ultra-sensitive measurement of the resonance type MEMS sensor on weak signals is facilitated.

The invention relates to the technical field of measuring devices, in particular to an online densitometer, the bottom of a control body is fixedly connected with a connection control component, the bottom of the connection control component is fixedly connected with a measuring tuning fork, and the outer side of the measuring tuning fork is movably sleeved with two cleaning scraping rings; three mounting holes are formed in the ends of the two cleaning scraping rings, scraping ring springs are fixedly connected into the mounting holes, connecting protection blocks are fixedly connected between the scraping ring springs in the adjacent mounting holes of the two cleaning scraping rings, and the connecting protection blocks are slidably clamped into the mounting holes. The online densimeter has the advantages of being simple in structure, convenient to operate, capable of being cleaned and high in measurement accuracy, adhering substances on the measurement surface can be effectively removed through the scraping and vibrating mechanism, the accuracy of the measurement result is guaranteed, meanwhile, the design of the online densimeter considers the requirement of vibration measurement, and it is guaranteed that vibration measurement is not interfered after cleaning.

The present invention discloses an intelligent multi-parameter oil quality monitoring device, comprising: a housing with a detection end and an output end at both ends, a resonant cavity and a detection cavity are arranged inside the housing, a particle detection channel and an oil port are provided on the housing; a monitoring component, including a sensing circuit module, a tuning fork resonance sensor, a temperature sensor and a microfluidic chip, the tuning fork resonance sensor includes a quartz tuning fork, the microfluidic chip includes a capacitor, and the capacitor includes electrode plates. This intelligent multi-parameter oil quality monitoring device integrates the temperature sensor, the tuning fork resonance sensor and the microfluidic chip inside the housing. By installing the housing on the oil pipe, multiple parameters such as the viscosity, dielectric constant, temperature, abrasive particle size, density, etc. in the oil can be monitored simultaneously, so as to accurately judge the oil quality, avoid false alarms, and perform data transmission through the sensing circuit module, with high integration, small volume and strong anti-interference ability.

The invention relates to the technical field of material level detection, particularly provides an eccentric tuning fork material level switch probe, and aims to solve the problem that an existing tuning fork material level switch is not easy to maintain. In order to achieve the purpose, the tuning fork level switch comprises a tuning fork, an eccentric cushion block and a vibrator excitation structure, the eccentric cushion block comprises a base plate and an eccentric block, and the eccentric block is located on one side of the base plate and abuts against the tuning fork; and the vibrator excitation structure is located on the side, away from the tuning fork, of the eccentric cushion block and is configured as a rapping cushion plate, and the position of the rapping cushion plate of the vibrator excitation structure does not coincide with the eccentric block. The vibrator excitation structure, the eccentric cushion block and the tuning fork abut against one another, so that the vibrator excitation structure, the eccentric cushion block and the tuning fork can be separated and replaced, the maintenance difficulty is reduced, the maintenance cost is greatly reduced, and the reliability after maintenance is high.

The invention discloses a liquid level transmitter and a self-cleaning structure thereof, and relates to the technical field of liquid level transmitters. The detector comprises a detector body, one end of the detector body is symmetrically and fixedly connected with cables, one end of each cable is fixedly connected with a sensor, and one end of each cable is fixedly connected with a flange plate. Through cooperative use of the transmission mechanism, the knocking rod and the annular vibration tuning fork, when a driving motor is started to drive a special-shaped reciprocating wheel to form rolling contact with a contact bead, the knocking rod is driven to deflect in a reciprocating manner around a hinge shaft in cooperation with a reset torsion spring, so that the knocking rod continuously impacts the annular vibration tuning fork to generate high-frequency vibration; meanwhile, the transmission mechanism is utilized to drive and cooperate with the resilience characteristic of the elastic annular airbag sheet to generate reciprocating expansion and contraction deformation, so that the elastic annular airbag sheet crushes large dirt deposited on the surface of the sensor, and high-frequency vibration is matched to enable the dirt deposited on the surface of the sensor to fall off; therefore, dirt deposited on the surface of the sensor can be automatically and quickly cleaned.

The invention discloses a low-temperature drift silicon resonance accelerometer structure, which relates to the technical field of inertial navigation and comprises a middle layer, an upper glass cover plate and a lower glass cover plate, the upper-layer glass cover plate and the lower-layer glass cover plate respectively cover two sides of the outer frame of the middle layer and are bonded with the outer frame, so that the middle layer is packaged in vacuum; a supporting point of the resonator is designed at the geometric center of the middle layer of the accelerometer, a center anchor point, an amplification lever structure and the double-end fixed tuning fork type resonator are connected through a resonator center supporting beam, detection comb teeth are driven to measure resonant frequency influenced by inertia force, frequency signals are led out to the outside, and acceleration is represented; in the design of the invention, the measurement structure of the middle layer is fixed with the shell only through one supporting point, the influence of thermal stress on the performance of the accelerometer is obviously reduced, and the design enables the double-end fixed tuning fork type resonator to be close to a free thermal expansion state when the temperature of the accelerometer changes, so that the stable frequency response is kept.

The invention discloses an atomic force microscopic imaging device and method for a Josephson probe microscope, and belongs to the technical field of atomic force microscopic imaging. The device comprises a sample table, a second displacement assembly, a first displacement assembly, a superconductive Josephson probe assembly, a first controller, a second controller, a lock-in amplifier, a current amplifier and a high-speed data collector, the superconductive Josephson probe assembly comprises a probe module and a tuning fork module, and the probe module comprises a probe and a probe box. The tuning fork module comprises a tuning fork wafer and a substrate, the probe is connected with the tuning fork wafer, the lock-in amplifier is connected with the tuning fork wafer to monitor the amplitude change of the tuning fork wafer in real time, and the lock-in amplifier drives the sample to move up and down by controlling the second controller to realize closed-loop adjustment of the distance between the probe and the sample. The distance between the probe and the surface of the sample is adjusted in real time, the high stability in the imaging process is ensured, and the resolution is further improved; the service life of the probe can be effectively prolonged, and the use cost is reduced.

A resonant beam accelerometer employing a pair of double ended tuning forks and a proof mass having meso-scale mass as it is formed in the handle layer of a SOI wafer and a method of fabricating same is disclosed. The resonant frequencies of the pair of double ended tuning forks change in opposite directions when an externally applied acceleration is in a direction parallel to the pair of double ended tuning forks. Due to the proof mass having meso-scale mass, the resonant beam accelerometer is very sensitive. By employing a lid and a stator cap, the active portions of the resonant beam accelerometer may be sealed in a vacuum to further increase sensitivity.

The traction transformer comprises a plurality of mounting plates and an iron core, the mounting plates are symmetrically arranged front and back, a threaded rod is jointly mounted between every two adjacent mounting plates, bolts are mounted at the front end and the rear end of each threaded rod, an arc-shaped plate is fixedly connected to the center of an inner cavity of each mounting plate, and the iron core is fixedly connected to the arc-shaped plate. Through mutual cooperation of the tuning fork, the lifting rope, the ball body, the arc-shaped plate, a connecting rod, a limiting plate, a push block, a contact rod, a spring, a trigger switch, a cable, a buzzer, a fastening gear, a grooved wheel, a gear, a belt, a motor, a vertical plate and the like, the tuning fork can vibrate when a screw for clamping an iron core is loosened, and the ball body can be driven to deviate when the tuning fork vibrates, so that the iron core is prevented from being damaged. Therefore, the trigger switch is started to fasten the bolt, and further serious faults such as short circuit, insulation breakdown and the like are prevented from being caused to threaten personnel and equipment.

A tuning-fork-type driving element includes: a movable part rotatable about a rotation axis; a coupling part extending from the movable part along the rotation axis; a pair of arm parts placed with the coupling part located therebetween; a support part coupling the coupling part and the pair of arm parts to a fixation part; and drive parts placed on the arm parts, respectively. The pair of arm parts each have a protrusion that overlaps a node line that occurs when the arm parts vibrate in a higher-order vibration mode higher than a first-order vibration mode or an extension line of the node line.

The utility model discloses a multi-tuning fork mechanical leakage listening rod, which relates to the technical field of pipeline detection and comprises a supporting rod, a mounting rod is mounted at the top of the supporting rod, a leakage listening assembly is arranged at the bottom of the supporting rod, and a connecting rod for adjusting the use length is arranged at the top of the supporting rod. And sound transmission rods are arranged in the connecting rod and the mounting rod. The beneficial effects of the utility model are that the first flange plate and the second flange plate are fixed through the bolts, and the connecting rod can be installed between the supporting rod and the installation rod, thereby achieving the effect of adjusting the use length, avoiding the problem of insufficient length during the detection of a deeper underground pipeline, and improving the detection precision through arranging a plurality of groups of tuning forks. The sound frequency can be distinguished more finely, the sensitivity and accuracy of water leakage detection are improved, the tuning fork transmits sound to the sound transmission rod through the sound listening rod, and the sound amplification cover amplifies the sound transmitted by the sound transmission rod.

The utility model discloses a multipurpose feeling detection device, which comprises a grab handle and an end head, the front end of the grab handle is connected with the middle part of the end head, the top end of the end head is provided with a tuning fork, a plurality of round counter bores are arranged from the bottom surface of the end head to the inside of the end head, a guide groove is arranged from the outer side surface of the end head to the inside of the end head, and sliding columns and springs are arranged in the round counter bores. The bottom end of the sliding column is clamped with the top end of the spring, a clamping block is arranged on the outer side face of the top of the sliding column, and a testing element is arranged in the center of the bottom end face of the sliding column and completely located in the round counter bore in the initial state. The grab handle comprises a lower handle, an upper handle, a hinge disc and a connecting handle, the inner end of the lower handle and the inner end of the upper handle are hinged together through the hinge disc, and the hinge disc is connected with the end head through the connecting handle. According to the utility model, the functions of qualitative tactile sensation, quantitative tactile sensation, pain sensation, vibration sensation and composite sensation evaluation are integrated, other tools are not needed in the sensation evaluation process, and the device is simple and compact in structure, small in size and convenient to carry and use.

The invention relates to the technical field of chemical powder conveying, in particular to a powder storage tank high alarm switch false alarm prevention device and a control method thereof. According to the technical scheme, the false alarm prevention device for the high alarm switch of the powder storage tank comprises a powder bin, a powder conveying pipeline, a tuning fork main body, a tuning fork switch, a vibrator, an exhaust port, an air source pipe, an electromagnetic valve and a DCS control line, the powder conveying pipeline is arranged on the top face of the powder bin, and the tuning fork switch is arranged on one side of the powder conveying pipeline; a tuning fork body is arranged on the top face in the powder bin and electrically connected with the tuning fork switch. The pipeline below the mounting flange of the high-alarm tuning fork switch is vibrated at regular intervals, so that accumulation of polyethylene powder flying dust on the high-alarm tuning fork switch can be effectively removed, false alarm of the high-alarm tuning fork switch due to material hanging is prevented, the false alarm rate of the high-alarm switch is remarkably reduced, and interlocking shutdown of an air conveying system caused by false alarm is avoided.

The utility model provides a multifunctional tuning fork device for ear-nose-throat head and neck surgery, and relates to the technical field of medical instruments, the multifunctional tuning fork device mainly comprises a tuning fork, a connecting rod assembly and a hammer, the tuning fork is Y-shaped, the connecting rod assembly is fixedly arranged at the non-bifurcated end, the hammer is arranged at the tail end of the connecting rod assembly, and the connecting rod assembly is connected with the hammer. The connecting rod assembly comprises a connecting rod, a first handle and a second handle which are arranged in sequence, one end of the connecting rod is fixedly connected with the tuning fork, the opposite end of the connecting rod is detachably connected with one end of the first handle, the opposite end of the first handle is detachably connected with one end of the second handle, and a sound hammer is fixedly arranged at the opposite end of the second handle; according to the tuning fork device, when the tuning fork device is not used, the second handle and the first handle are connected together, so that forgetting to carry the tuning fork can be prevented, when the tuning fork device is used, the second handle and the first handle are detached, the tuning fork and the hammer are used in an impact mode, and a doctor can use the tuning fork device conveniently.

The utility model discloses a cleaning device for an electronic densimeter, and belongs to the technical field of grouting. The device comprises a grouting pipeline; a pipeline notch is formed in the top of the grouting pipeline, and a connecting pipe communicated with the grouting pipeline is mounted on the pipeline notch; the detection assembly comprises a densimeter main body, a tuning fork seat and a tuning fork sensor; the tuning fork seat is mounted at the bottom of the densimeter main body, the tuning fork sensor is mounted at the bottom of the tuning fork seat, and the bottom of the tuning fork seat penetrates through the connecting pipe and the pipeline notch and then extends into the grouting pipeline; the cleaning assembly comprises a first nozzle and a second nozzle. The utility model relates to a densimeter flushing device, which is used for flushing a densimeter under the condition that the grouting work is not stopped. The device is time-saving and labor-saving, and does not affect the normal construction of grouting work. The field working efficiency is greatly improved, and the loss of labor force of personnel is reduced.

1. Name of the product in this design: Tuning Fork. 2. Purpose of this design: For use in physical resonance experiments. 3. The key design features of this product are its perspective view. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention discloses an acceleration sensor based on a coupled beam type 1:3 internal resonance phenomenon, comprising: a mass block, a first micro-lever and a second micro-lever arranged on one side of the mass block in a horizontal direction and symmetrically arranged up and down, a first tuning fork beam and a second tuning fork beam arranged on one side of the mass block in a horizontal direction, two ends of the first tuning fork beam being fixed respectively by a first fixed end and a second fixed end; the first fixed end and the second fixed end being arranged on both sides of a detection electrode respectively; two ends of the second tuning fork beam being fixed respectively by a third fixed end, a first micro-lever and a second micro-lever; two ends of the second tuning fork beam being fixed respectively by the third fixed end, the first micro-lever and the second micro-lever; the first tuning fork beam and the second tuning fork beam being coupled by electrostatic coupling, a coupling power supply outputting a coupling voltage being loaded on the second fixed end connected to the first tuning fork beam, the first tuning fork beam detecting amplitude and frequency by a fixed detection electrode; the second tuning fork beam adjusting driving force by a fixed excitation electrode.

The invention belongs to the technical field of lead-bismuth reactors, and particularly relates to a lead-bismuth reactor control rod assembly positioning structure. The control rod cluster comprises an upper end positioning structure, a lower end positioning structure, a tuning fork type upper end plug and a tuning fork type lower end plug, the control rod cluster is located between the upper end positioning structure and the lower end positioning structure, the control rod cluster comprises 19 control rods, the upper end positioning structure is connected with the tuning fork type upper end plug in a matched mode, and the lower end positioning structure is connected with the tuning fork type lower end plug in a matched mode. The upper end positioning structure and the lower end positioning structure are located at the two ends of the control rod bundle and jointly achieve positioning of the control rod. On the basis of meeting the requirement of flow distribution uniformity of the control rod assembly coolant and overcoming transverse shaking of the control rod, the lead-bismuth coolant uniformly flows through the rod cluster type control rod and the transverse impact of the coolant on the control rod is reduced on the basis of realizing rapid assembly of the control rod assembly.

The invention relates to an iodine adsorption material and a preparation method and application thereof, and belongs to the technical field of iodine adsorption. The iodine adsorption material provided by the invention comprises at least one structural component which is in a tuning fork shape, has a tuning fork shape and groups such as a pyridine ring and amide, and accords with a specific general formula (I), a general formula (II) or a general formula (III); the iodine adsorption material is free of purification in the preparation process, high in yield and suitable for large-scale production; the water-phase iodine adsorbent has good iodine adsorption capacity, can realize ultra-fast adsorption of water-phase iodine, still has high adsorption efficiency after being recycled for multiple times, solves the problems of slow adsorption rate, high preparation cost, poor stability, poor cycle performance and the like of the existing adsorbent, and has very high application value.

A support for calibration of a tuning fork type online densimeter comprises a base and a support body fixedly installed on the base, a housing is fixedly installed on the side wall of the support body, a lifting mechanism is installed in the housing and comprises a servo motor, and the output end of the servo motor is connected with a ball screw arranged in the vertical direction through a flexible coupler. A movable nut of the ball screw is connected with a supporting plate, a tray is mounted at the end part of the supporting plate, a mounting hole for mounting the tuning fork type online densimeter is formed in the tray, a through hole corresponding to the mounting hole is formed in the supporting plate, an adjusting bolt is arranged on the bottom surface of the supporting plate, and the adjusting bolt penetrates through the supporting plate and is propped against the tray. According to the utility model, the height of the tuning fork type on-line densimeter can be adjusted according to the length of the sensor at the lower end of the tuning fork type on-line densimeter, so that the tuning fork type on-line densimeter can meet the calibration requirements of tuning fork type on-line densimeters with different sizes.

The application discloses an anti-disturbance tuning fork densimeter probe for high-viscosity fluid, which comprises a bearing sleeve, a mounting plate fixed in the bearing sleeve, two groups of butterfly spring sets symmetrically arranged at the bottom end of the mounting plate, a bearing plate fixed at one end of the butterfly spring set, a recess cavity formed in the bearing plate, a piezoelectric ceramic piece mounted in the recess cavity, and a tuning fork probe fixed on the piezoelectric ceramic piece. The anti-disturbance mechanism is composed of a disturbance shielding sleeve, a spiral flow guide piece, a spiral flow channel and a polyurethane buffer layer. During the measurement process, the disturbance shielding sleeve guides the high-viscosity fluid to flow through the tuning fork probe stably through the spiral flow channel, so that the direct impact of the flow velocity fluctuation on the tuning fork probe is avoided, meanwhile, the polyurethane buffer layer can absorb the fluid impact energy, and the double anti-disturbance effect can be realized by the combination of the two, the measurement precision of the device is improved, and the device has high use performance.

The utility model relates to a vibration pen, a shell comprises an upper shell, a lower shell and a cavity formed by buckling and connecting the upper shell and the lower shell, and a battery is electrically connected with a vibration device through a main control board; the vibration device comprises a motor and a vibration contact used for making contact with the human body, one end of the vibration contact is fixed in the cavity, and the other end extends out along the top end of the cavity. The main control board is provided with a power switch and a frequency adjusting assembly used for adjusting the vibration frequency of the vibration device, the frequency adjusting assembly is a rotary adjusting assembly or a press-type adjusting assembly, and the main control board is further connected with a display assembly used for displaying the working state of the vibration sense pen. The vibration frequency is adjusted through the main control board and the electric control vibration device, the vibration frequency can be accurately controlled, and compared with traditional tuning fork detection and the like, the accuracy of the detection result is improved, the detection efficiency is improved, the operation complexity of medical staff is reduced, and the medical experience of patients is improved.

The utility model relates to the technical field of tank car filling metering, in particular to a low-temperature liquid tank car filling metering device. According to the technical scheme, the filling metering device for the low-temperature liquid tank car comprises a plug, an inner fixing plate, a tank and an outer fixing plate, a window is formed in one end of the tank, the outer fixing plate is installed in the window of the tank, the inner fixing plate is installed at the position, corresponding to the outer fixing plate, of the interior of the tank, and the plug is connected with the inner fixing plate. The inner fixing plate and the outer fixing plate are locked and fixed through bolts, a tuning fork type liquid level meter is installed on the outer fixing plate, a measuring head is arranged at the end, located in the tank, of the tuning fork type liquid level meter, and a controller is arranged at the end, located on the outer side of the tank, of the tuning fork type liquid level meter. The problem that the filling weight is overloaded due to the fact that the mechanical liquid level meter is jammed and frozen to death can be effectively solved, and the safety and the accuracy of the filling process are guaranteed.

The embodiment of the invention discloses a self-cleaning tuning fork sensor. The self-cleaning tuning fork sensor comprises a tuning fork sensor and a controller, the tuning fork sensor comprises a tuning fork body and a vibration assembly. The controller comprises a self-cleaning module; the self-cleaning module is electrically connected with the vibration assembly and used for executing cleaning operation. Wherein the cleaning operation comprises the step of controlling the vibration assembly to drive the tuning fork body to vibrate so as to remove dirt attached to the surface. According to the embodiment of the invention, the self-cleaning module is added for removing dirt on the surface of the tuning fork body, manual disassembly for cleaning is not needed, the manual maintenance cost is reduced, the shutdown maintenance time is shortened, and meanwhile, the detection precision stability and long-term operation reliability of the sensor are enhanced.

The invention discloses a micro-electro-mechanical gyroscope which comprises a plurality of tuning forks of the same structure, and each tuning fork of the tuning forks comprises a first frame, a second frame and a third frame, a second frame adjacent to the first frame; a Coriolis force unit coupled to the first frame and the second frame, respectively; a drive unit and a detection unit, the drive unit being located in one of the first frame and the second frame, the detection unit being located in the other of the first frame and the second frame; wherein the first frames in the adjacent tuning forks are coupled together, and the second frames in the adjacent tuning forks are coupled together.

The application discloses a processing technology of a tuning fork crystal, which comprises glass beads, tuning fork pieces arranged on the glass beads, shells arranged on the tuning fork pieces and lead wires arranged at the bottom of the glass beads, the tuning fork pieces are ST cut type, silver-plated electrodes are arranged on the tuning fork pieces, and the silver-plated electrodes are designed in a rotary mode. The unique ST cut type is adopted instead of the traditional DT cut type, so that a higher frequency range can be obtained. Since the vibration mode of the ST cut type is a torsional vibration mode, the electrodes are designed in a rotary mode, so as to conform to the oscillation mode of the ST cut type, thereby ensuring that the crystal piece can work stably after starting to vibrate. By adopting the unique ST cut type, the traditional tuning fork structure is retained, the rotary electrodes are utilized to promote the crystal piece to start to vibrate smoothly, and the torsional vibration mode maximally realizes the frequency which cannot be reached by the conventional tuning fork crystal.